42 ;. 



ereberrimut, xl.-l., n',i expresses, contiguit cincta i interatitiis 

 parvie, mtnutissime longitudinaUter atriulis omatia ,• aperture 

 acuta, ri.r deelivi, viz contractu et poetea expanta .• septa sub- 

 unguiato, subnutcronato ,• margine laterali recto ; apice tub- 

 deztroreum eito, obtuao, plus mvtusve tlevatoi opercula viz 

 concavo, linea npirali elevata, anfr. circiter .w., apertura 

 mquante. 



Test. jun. long. '076, lat. -013— -018. 



Test, adolese. long. -12S, lat. -015— •<).;. 



Test, adult, long. '128, lat. 025— -032. 



Variat margine laterali convexo, interdutn tumente. 



I lab. British Seas, in coralline zone (v. Forbes §- Hani.) \ Mag- 

 nisi, near Syracuse, very plentiful in sand (Phi/ippi) ; Piedmont 

 {Jeffreys)', N. and S. of Spain and Mediterranean (M' Andrew) \ 

 fossil at Palermo {Philippi) ; Subappenine beds (Home). 



Dent alia in trachea, Mont. Test. Brit. vol. ii. p. 497. pi. 14. f. 10 ; 

 Maton & Rack. Linn. Trans, vol. viii. p. 239; Dillw. Etec. Shells, 

 vol. ii. p. 106"8 ; Brit. Mar. Conch, p. 5. f. 61 ; Wood, Ind. Test. 

 ed. Hani. p. 192. 



+Dentalium imperforatutn, Ad. Micr. pi. 14. f. <s ; Mont. loc. eit. 

 p. 496 : Mat. foe. cit. p. 238 ; Turt. Conch. Diet. p. 39 ; Brit. Mar. 

 Conch, p. 4 ; Dillw. p. 1067 ; Wood, p. 192 (not f. 12). 



= Orthocera imperforata, Flem. Brit. An. p. 23/. 



— Oilnntiilinm ruyulosum (pars), Phil. Moll. Sic. vol. i. p. 1 02. 

 pi. 6. f. 20; vol. ii. p. 73. 



= Creaei8 ruguloaa, Cantraine, p. 32. 



= Iirochus trachiformis, Brown, 111. Conch. G.B. p. 124. pi. 56. 

 (.10 (male). 



+ Brochus strialas, Brown, loc. eit. (male), pi. 56. f. 13. 



Brochus troechiformis, Chenu, 111. Conch. 



('tecum trachea, Flem. Enc. Ediub. art. Conchology ; Clark, Ann. 

 Nat. Bist. series 2. vol. iv. p. 180 ; Forbes & Hani. Br. Moll. vol. iii. 

 p. 178. pi. 69. f. 4, & pi. KK. f. 1 ; Clark, Test. Mar. Brit. In-. 

 p. 327; Adams, Gen. vol. i. p. 355. pi. 38. f. 6, 6 a ; JetTr. Mar. 

 Test. Piedm. (Ann. Nat. Hist. Feb. 1856), p. 30; M'Andr. Rep. 

 Moll. N. Atl. (Br. Ass. 1856) p. 149; Home, Fobs. Men. ft 8ab- 

 appen. pi. 46. f. 19, a, b,c*. 



+ Ceecum imperforatutn, Flem. loc. cit.; Gray, Guide to Moll. 

 B.M. part i. p. 100. 



1)un.=Serpula recta, Walker, Flem. Enc. pi. 205. f. 8. 



= Cornuoides major, Brown, loc. cit. pi. 56. I. I!' ; Che&U, 

 lor. cit. 



Although the name trachea was given to the tapering ad o l e scent 

 state of this typical Bpecies, and imperforatum to the adult, the 

 former came has come into current use, probably beca u se the other 

 represents the generic and not a specific character. It is one <>t the 



* The Dentalium inatrrum, lienier, f. .".'.'<;. I, of the MUM plate, lookl like ■ 

 rubbed Cmcum; but neither figure nor description it MifHdfntty n<-cur«t' 

 identification. 



